// /src/pages/hot/hot.vue
<script setup lang="ts">
// 热门推荐页 标题和url

import { ref } from 'vue'
import { onLoad } from '@dcloudio/uni-app'
import { GetHotRecommenAPI } from '@/services/hot'
import type { SubTypeItem } from '@/types/hot'

const hotMap = [
  { type: '1', title: '特惠推荐', url: '/hot/preference' },
  { type: '2', title: '爆款推荐', url: '/hot/inVogue' },
  { type: '3', title: '一站买全', url: '/hot/oneStop' },
  { type: '4', title: '新鲜好物', url: '/hot/new' },
]
// 获取传递过来信息
const query = defineProps<{
  type: string
}>()
// 通过js设置动态标题
const currHot = hotMap.find(i => i.type === query.type)
uni.setNavigationBarTitle({
  // !强制选择
  title: currHot!.title,
})
// 设置切换下标
const activeIndex = ref(0)
// 设置封面
const bannerPicture = ref('')
// 保持推荐选项 finish是否还有数据的判断 & 额外添加新的类型 这里需要()
const subTypes = ref<(SubTypeItem & { finish?: boolean })[]>([])

//获取推荐数据
const getHotReconmmendData = async () => {
  // !手动默认为有值
  const data = await GetHotRecommenAPI(currHot!.url,
    {
      //import.meta.env.DEV 判断是否为开发环境
      page: import.meta.env.DEV ? 30 : 1,
      pageSize: 10,
    })
  bannerPicture.value = data.result.bannerPicture
  subTypes.value = data.result.subTypes

}
// 设置滑动触底
const onScrolltolower = async () => {
// 获取当前分页 vue的响应数组的响应下标 .value 的 .value
  const dqfy = subTypes.value[activeIndex.value]
//p判断是否还有数据
  if (dqfy.goodsItems.page < dqfy.goodsItems.pages) {
    dqfy.goodsItems.page++

  } else {
    dqfy.finish = true
    return uni.showToast({
      icon: 'none',
      title: '已经到底部了',
    })
  }
// 调用传参

  const data = await GetHotRecommenAPI(currHot!.url,
    {
      page: dqfy.goodsItems.page,
      pageSize: dqfy.goodsItems.pageSize,
    })
// 获取新的 返回过来的数据不是响应式
  const newdata = data.result.subTypes[activeIndex.value]

// 数组追加
  dqfy.goodsItems.items.push(...newdata.goodsItems.items)
}
// 页面启动时调用
onLoad(() => {
  getHotReconmmendData()
})

</script>

<template>
  <view class="viewport">
    <!-- 推荐封面图 -->
    <view class="cover">
      <image
        :src="bannerPicture"
      ></image>
    </view>
    <!-- 推荐选项 -->
    <view class="tabs">
      <text class="text "
            v-for="(item,index) in subTypes"
            :key="item.id"
            @tap="activeIndex=index"
            :class="{active:index===activeIndex}"
      >{{ item.title }}
      </text>

    </view>
    <!-- 推荐列表 -->
    <scroll-view scroll-y class="scroll-view"
                 v-for="(item,index) in subTypes"
                 :key="item.id"
                 v-show="activeIndex===index"
                 @scrolltolower="onScrolltolower"
    >
      <view class="goods">
        <navigator
          hover-class="none"
          class="navigator"
          v-for="goods in item.goodsItems.items"
          :key="goods.id"
          :url="`/pages/goods/goods?id=${goods.id}`"
        >
          <image
            class="thumb"
            :src="goods.picture"
          ></image>
          <view class="name ellipsis">{{ goods.name }}</view>
          <view class="price">
            <text class="symbol">¥</text>
            <text class="number">{{ goods.price }}</text>
          </view>
        </navigator>
      </view>
      <view class="loading-text">
        {{ item.finish ? '已经到底部' : '正在加载...' }}

      </view>
    </scroll-view>
  </view>
</template>

<style lang="scss">
page {
  height: 100%;
  background-color: #f4f4f4;
}

.viewport {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 180rpx 0 0;
  position: relative;
}

.cover {
  width: 750rpx;
  height: 225rpx;
  border-radius: 0 0 40rpx 40rpx;
  overflow: hidden;
  position: absolute;
  left: 0;
  top: 0;
}

.scroll-view {
  flex: 1;
}

.tabs {
  display: flex;
  justify-content: space-evenly;
  height: 100rpx;
  line-height: 90rpx;
  margin: 0 20rpx;
  font-size: 28rpx;
  border-radius: 10rpx;
  box-shadow: 0 4rpx 5rpx rgba(200, 200, 200, 0.3);
  color: #333;
  background-color: #fff;
  position: relative;
  z-index: 9;

  .text {
    margin: 0 20rpx;
    position: relative;
  }

  .active {
    &::after {
      content: '';
      width: 40rpx;
      height: 4rpx;
      transform: translate(-50%);
      background-color: #27ba9b;
      position: absolute;
      left: 50%;
      bottom: 24rpx;
    }
  }
}

.goods {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  padding: 0 20rpx 20rpx;

  .navigator {
    width: 345rpx;
    padding: 20rpx;
    margin-top: 20rpx;
    border-radius: 10rpx;
    background-color: #fff;
  }

  .thumb {
    width: 305rpx;
    height: 305rpx;
  }

  .name {
    height: 88rpx;
    font-size: 26rpx;
  }

  .price {
    line-height: 1;
    color: #cf4444;
    font-size: 30rpx;
  }

  .symbol {
    font-size: 70%;
  }

  .decimal {
    font-size: 70%;
  }
}

.loading-text {
  text-align: center;
  font-size: 28rpx;
  color: #666;
  padding: 20rpx 0 50rpx;
}
</style>
